Interface Microstructure Welded by Ultrasonic Welding

Abstract

Ultrasonic welding is widely used as one of the excellent solid-state weldings. However, the mechanism of the welding has not been clarified enough. This report discussed the welding mechanism of advanced Mg alloys, and the Cu multi-wire and the substrate based on the microstructure investigation. Development of in-situ TEM observation technique for ultrasonic welding was reported as well, and nanoparticle